This article describes how to use the gpt-4-turbo API. First, the features and functions of gpt-4-turbo are introduced, including text generation, dialogue system, translation, summary generation, etc. It then details how to use gpt-4-turbo via API requests, including sample code and return results. Also covered is how to use JSON schema and gpt-4-1106-preview models. Reference links are provided at the end.